Apparatus for disconnecting belt-gearing.



PATENTED APR. 18, 1905.

J. J. RIEGER. v

APPARATUS FOR DISCONNEGTING BELT GEARING.

APPLIGATION FILED AUG. 25. 1904.

2 SHEETSSHEET 1.

Invenlor r e lnll Fig.1

WJW

No. 787.398. PATENTED APR. 18, 1905. J. J. RIEGER.

APPARATUS FOR DISCONNEOTING BELT GEARING. f APPLICATION FILED AUG.25,1904.

2 SHEETS-SHEET 2.

Irma nfor UNiTED STATES Patented April 18, 1905.

J EAN JACQUES .RIEGER, OF LURE, FlxhkNUlG.

APPARATUS FOR DISCONNECTING BELT-GEARlNG- SPECIFICATION forming part of Letters Patent No. 787,398, dated April 18, 1905.

Application filed August 25, 1904. Serial No. 222,135.

To IP/m/it 'IH/(I/Z/ (o/warn:

Be it known that l, JEAN JACQUES linemen,

technician, a citizen of the Republic of France,

l belt when thrown oil to a standstill.

residing at Lure, France, have invented a new and useful improved Apparatus for Disconnecting Belt-Gearing, of which the following is a specification.

The presentinvention relates to an appara- 3 tus which serves for the putting in and outof operation of the belt on a belt-pulley.

The chief characterlstic of the improvement consists in the entire avoidance of the usually-employed loose pulley.

Moreover, the invention is further charac terized by the arrangement that the belt when out of operation not only stands still, butalso experiences an entire release from tension.

A main object of the invention is, moreover, to prevent accidents, while causing a very considerable reduction in the cost of maintenance of the belts and doing away with all the expenses connected with loose pulleys and their lubrication, &c.

The apparatus is illustrated in front elevation in Figure 1 of the accompanying drawings, said elevation being taken at right angles to the axis of the driving-shaft. This ligure shows both positions of the belt, the operative position and that which corresponds to the position of rest. The direction of revolution is indicated by the arrow. In Fig. 2 the device is shown in side elevation taken in a direction parallel to the driving-shaft. The ligure shows the position of the belt during operation.

The support 1/, attached to a beam of the workshop, carries a series of rollers 0. These preferably-tapering rollers are each revolubly supported upon a pivot (Z. Theysucceed one another at regular intervals and lie close to the pulley-rim 1/ in such a manner that the belt in consequence of being moved sidewise by any convenient means can easily be transferred from the pulley to the aforesaid rollers, or vice versa, just as it it were passing from a fixed to a loose pulley, or vice versa.

hen the belt is at rest, it is carried by the rollers. Their number is greater or less, according to the size of the pulley. The apparatus illustrated in the drawings possesses live rollers, tour of which are supported by the support// in the manner alreadydescribed. The arrangement thus constructed brings the The tapering construction of the rollers shown in the drawings has for its ob ect to release the belt when out of use from strain, be-

cause the tension of the belt in consequence of the decrease ol the diameter of the rollers is necessarily (llIIllIilSllOtl. For the purpose of entirely relieving the belt from strain when out of operation the pivot x, which carries the last roller is not attached to the support (I, but to an adjustable sliding shoe 1) 1]. shoe is movable in a curved slot 6. The said slot formed in the lower part of the support (I is concentric with the belt-pulley rim.

The motion of the shoe in its slot has for its object to effect the complete release of the belt from tension when out of use. At the same time this simplifies the transfer of the belt back to the pulley. The said motion of the shoe is the result of hand-pressure communicated by means of the two wheels t. The pivots 1/, upon which these wheels revolve, are secured to the support a at the respective ends of the slotl). A rope 1', the ends of which are secured above and below to the shoe by two annular projections, passes around the grooves of both pulleys Z and serves to raise the shoe or to lower it, as required, the rope being adjusted so that it hangs down conveniently for the hand.

The parts which cause the side motion of the belt when it is thrown in or out of operation are denoted by the letters eff] /r [j]; I m. These contain nothing essentially new and are only to be regarded as auxiliary to the abovedescribed device. l\loreover, the drawings fully show their mode of operation.

The device operates as follows: \Vhen the belt is at rest, it is necessary in order to set the same in motion to pull at the same time the rope and the rope w. 11, however, the belt is to be stopped, it suliices to pull the rope in, so that the belt in consequence of the side push of the t'orkj is transferred to the rollers e. The shoe accordingly passes automatically into the corresponding position. The putting on of the belt requlres no exer- This ' a fixed support carrying said rollers, means for moving a belt from said pulley on to said rollers and from said rollers on to said pulley and means for relaxing the tension on said belt When at rest on said rollers, substantially as described.

2. In a device for bringing into and out of operation power-transmitting belts, a plurality of conical pivoted rollers placed near the rim of a pulley, a fixed support carrying said rollers, means for moving a belt from said pulley on to said rollers and from said rollers on to said pulley, and means for relaxing the tension on said belt when at rest on said rollers, substantially as described.

3. In a device for bringing into and out of operation power-transmitting belts, a plurality of rollers placed near the rim of a pulley,

'a fixed support carrying said rollers, means for moving a belt from said pulley on to said rollers and from said rollers on to said pulley, a movable slide carrying one of said rollers, there being a curved slot concentric With the pulley-rim in said roller-support, carrying said slide and means for moving said slide concentrically With said pulley to relax the tension of said belt when at rest on said rollers, substantially as described.

4. In a device for bringing into and out of operation power-transmitting belts, a plurality of conical pivoted rollers placed near the rim of a pulley, a fixed support carrying said rollers, means for moving a belt from said pulley on to said rollers and from said rollers on to said pulley, a movable slide carrying one of said rollers, there being a curved slot concentric With the pulley-rim in said roller-support carrying said slide and means for moving said slide concentrically With said pulley to relax the tension of said belt when at rest on said rollers, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of tWo subscribing Witnesses.

JEAN JACQUES RIEGER. [1,. s] l/Vitnesses:

ALBERT GRAOTER, GEO. GIFFoRD. 

